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MC9S12VR-Family - Data Sheet - Freescale Semiconductor

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High-Side Drivers - HSDRV (S12HSDRV1)<br />

13.3.4 HSDRV Configuration Register (HSCR)<br />

Module Base + 0x0001 Access: User read/write 1<br />

1 Read: Anytime<br />

Write: Anytime<br />

7 6 5 4 3 2 1 0<br />

R 0 0 0 0<br />

W<br />

<strong>MC9S12VR</strong> <strong>Family</strong> Reference Manual, Rev. 2.8<br />

HSOLE1 HSOLE0 HSE1 HSE0<br />

Reset 0 0 0 0 0 0 0 0<br />

= Unimplemented<br />

Figure 13-3. HSDRV Configuration Register (HSCR)<br />

Table 13-5. HSCR Register Field Descriptions<br />

Field Description<br />

3-2<br />

HSOLE<br />

1-0<br />

HSE<br />

HSDRV High-Load Resistance Open-Load Detection Enable<br />

These bits enable the measurement function to detect an open-load condition on the related high-side driver<br />

operating on high-load resistance loads. If the high-side driver is enabled and its gate is not being driven by the<br />

selected source, then the high-load resistance detection circuit is activated when this bit is set to ‘1’.<br />

0 high-load resistance open-load detection is disabled<br />

1 high-load resistance open-load detection is enabled<br />

HSDRV Enable —<br />

These bits control the power supply of the related high-side driver circuit.<br />

0 High-side driver supply is disabled<br />

1 High-side driver supply is enabled<br />

NOTE<br />

After enabling the high-side driver (write 1 to HSEx) a settling<br />

time t HS_settling is required before the high-side driver gate is<br />

allowed to be turned on (e.g. by writing HSDRx bits).<br />

402 <strong>Freescale</strong> <strong>Semiconductor</strong>

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